Video thumbnail for Britain’s Most Incredible Submarine - HMS M1

Britain’s Most Incredible Submarine - HMS M1

Aug 24, 2025
HMS M1 was one of the most incredible submarines that Britain ever built. Armed with a massive 12" gun weighing 50 tonnes that had been removed from a battleship the Royal Navy were so concerned that it would be copied by the Germans that they kept it secret throughout World War 1. Very sadly, HMS M1 vanished in 1925 with the loss of her entire crew until it was located by a salvage team in 1967 and then formally identified by a dive team in 1999. Very rarely dived, in this video I provide detailed footage of the wreck and suggest where the massive 12" gun is currently located *Support what I Do* Thanks for watching my video and if you'd like to support what I do then please consider joining my channel - http://bit.ly/4kMVqCB You may also wish to buy me a coffee - https://buymeacoffee.com/d33puk *Highlights* 00:00 Introduction 03:32 Challenging Surface Conditions! 04:58 Problems with a bailout cylinder 07:30 Tying In 10:15 Gun Mount 13:34 Firing the Gun 19:13 Traversing the Gun 23:20 Back up on the wreck 29:27 Helm and bridge 30:58 Open hatch - did they try to escape? 34:00 Bow 35:59 Deco Profile 37:06 Surfacing *Kit I Use* Note, some of these are affiliate links so help support making my videos: - Gloves are Ansell Alphatec 87-063 - https://amzn.to/4jDHhX4 - Main torch is an Orcatorch D630 - https://amzn.to/4jlT4tA - Backup torch is an Orcatorch D710 - https://amzn.to/4jhddRk - Drysuit is an O-Three Ri2-100 - https://www.othree.co.uk/drysuit-range/ri-2-100-drysuit/ - CCR is an AP Diving Inspiration (XPD) - https://www.apdiving.com/ - Backup computer is a Shearwater Perdix v2 - https://amzn.to/42FXZOW - Reels are by Kent Tooling - https://www.divingproducts.co.uk/ - Cameras are Paralenz Vaquita - Video light is NiteScuba NSV60 - NiteScuba NSV60 - https://s.click.aliexpress.com/e/_onHEKQZ - Phone housing is Divevolk Seatouch 4 Max - https://s.click.aliexpress.com/e/_omJlNKL - Stickers for gear by Dive Signs - https://www.divesigns.com/ *Strobes* I use two different strobes (also affiliate links) -- Prozhaozhu 3000 Lumen Diving Strobe - https://s.click.aliexpress.com/e/_oBMRF3X -- Prozhaozhu 4000 Lumen Diving Strobe - https://s.click.aliexpress.com/e/_oCTEses - Jon clip - https://s.click.aliexpress.com/e/_oDqq0RW *Thanks* Thanks to Rick Ayrton for use of his photos and Plymouth University for their multibeam imagery of the wreck 📱Follow My Socials! Instagram: https://www.instagram.com/deepwreckdiver/ Facebook: https://www.fb.com/DeepWreckDiver Buy Me A Coffee: https://buymeacoffee.com/d33puk Email: [email protected]

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